Mand Labs KIT-1 Premium Edition: The STEM Electronics Kit 60 experiments pack (covers fundamentals of electricity and electronics) 165 electronic components and tools packaged in a portable workstation 9 hours of video library for learning at your own pace and a flash drive containing videos and visual step-by-step project building instructions Two reference books for understanding the physics and math behind and a highly visual and detailed step-by-step building instructions of each project Premium projects: IR Security Alarm System, Temperature Sensor, Joule Thief (Drawing energy from a dead cell)